mfi_cam.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*-
    2  * Copyright 2007 Scott Long
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/8.2/sys/dev/mfi/mfi_cam.c 204911 2010-03-09 13:32:50Z kib $");
   29 
   30 #include "opt_mfi.h"
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/kernel.h>
   35 #include <sys/malloc.h>
   36 #include <sys/module.h>
   37 #include <sys/selinfo.h>
   38 #include <sys/bus.h>
   39 #include <sys/conf.h>
   40 #include <sys/eventhandler.h>
   41 #include <sys/rman.h>
   42 #include <sys/bus_dma.h>
   43 #include <sys/bio.h>
   44 #include <sys/ioccom.h>
   45 #include <sys/uio.h>
   46 #include <sys/proc.h>
   47 #include <sys/signalvar.h>
   48 
   49 #include <cam/cam.h>
   50 #include <cam/cam_ccb.h>
   51 #include <cam/cam_debug.h>
   52 #include <cam/cam_sim.h>
   53 #include <cam/cam_xpt_sim.h>
   54 #include <cam/scsi/scsi_all.h>
   55 #include <cam/scsi/scsi_message.h>
   56 
   57 #include <sys/bus.h>
   58 #include <sys/conf.h>
   59 #include <machine/md_var.h>
   60 #include <machine/bus.h>
   61 #include <machine/resource.h>
   62 #include <sys/rman.h>
   63 
   64 #include <dev/mfi/mfireg.h>
   65 #include <dev/mfi/mfi_ioctl.h>
   66 #include <dev/mfi/mfivar.h>
   67 
   68 struct mfip_softc {
   69         device_t        dev;
   70         struct mfi_softc *mfi_sc;
   71         struct cam_devq *devq;
   72         struct cam_sim  *sim;
   73         struct cam_path *path;
   74 };
   75 
   76 static int      mfip_probe(device_t);
   77 static int      mfip_attach(device_t);
   78 static int      mfip_detach(device_t);
   79 static void     mfip_cam_action(struct cam_sim *, union ccb *);
   80 static void     mfip_cam_poll(struct cam_sim *);
   81 static struct mfi_command * mfip_start(void *);
   82 static void     mfip_done(struct mfi_command *cm);
   83 
   84 static devclass_t       mfip_devclass;
   85 static device_method_t  mfip_methods[] = {
   86         DEVMETHOD(device_probe,         mfip_probe),
   87         DEVMETHOD(device_attach,        mfip_attach),
   88         DEVMETHOD(device_detach,        mfip_detach),
   89         {0, 0}
   90 };
   91 static driver_t mfip_driver = {
   92         "mfip",
   93         mfip_methods,
   94         sizeof(struct mfip_softc)
   95 };
   96 DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, 0, 0);
   97 MODULE_DEPEND(mfip, cam, 1, 1, 1);
   98 MODULE_DEPEND(mfip, mfi, 1, 1, 1);
   99 
  100 #define ccb_mfip_ptr sim_priv.entries[0].ptr
  101 
  102 static int
  103 mfip_probe(device_t dev)
  104 {
  105 
  106         device_set_desc(dev, "SCSI Passthrough Bus");
  107         return (0);
  108 }
  109 
  110 static int
  111 mfip_attach(device_t dev)
  112 {
  113         struct mfip_softc *sc;
  114         struct mfi_softc *mfisc;
  115 
  116         sc = device_get_softc(dev);
  117         if (sc == NULL)
  118                 return (EINVAL);
  119 
  120         mfisc = device_get_softc(device_get_parent(dev));
  121         sc->dev = dev;
  122         sc->mfi_sc = mfisc;
  123         mfisc->mfi_cam_start = mfip_start;
  124 
  125         if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL)
  126                 return (ENOMEM);
  127 
  128         sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc,
  129                                 device_get_unit(dev), &mfisc->mfi_io_lock, 1,
  130                                 MFI_SCSI_MAX_CMDS, sc->devq);
  131         if (sc->sim == NULL) {
  132                 cam_simq_free(sc->devq);
  133                 device_printf(dev, "CAM SIM attach failed\n");
  134                 return (EINVAL);
  135         }
  136 
  137         mtx_lock(&mfisc->mfi_io_lock);
  138         if (xpt_bus_register(sc->sim, dev, 0) != 0) {
  139                 device_printf(dev, "XPT bus registration failed\n");
  140                 cam_sim_free(sc->sim, FALSE);
  141                 cam_simq_free(sc->devq);
  142                 mtx_unlock(&mfisc->mfi_io_lock);
  143                 return (EINVAL);
  144         }
  145         mtx_unlock(&mfisc->mfi_io_lock);
  146 
  147         return (0);
  148 }
  149 
  150 static int
  151 mfip_detach(device_t dev)
  152 {
  153         struct mfip_softc *sc;
  154 
  155         sc = device_get_softc(dev);
  156         if (sc == NULL)
  157                 return (EINVAL);
  158 
  159         if (sc->sim != NULL) {
  160                 mtx_lock(&sc->mfi_sc->mfi_io_lock);
  161                 xpt_bus_deregister(cam_sim_path(sc->sim));
  162                 cam_sim_free(sc->sim, FALSE);
  163                 mtx_unlock(&sc->mfi_sc->mfi_io_lock);
  164         }
  165 
  166         if (sc->devq != NULL)
  167                 cam_simq_free(sc->devq);
  168 
  169         return (0);
  170 }
  171 
  172 static void
  173 mfip_cam_action(struct cam_sim *sim, union ccb *ccb)
  174 {
  175         struct mfip_softc *sc = cam_sim_softc(sim);
  176         struct mfi_softc *mfisc = sc->mfi_sc;
  177 
  178         mtx_assert(&mfisc->mfi_io_lock, MA_OWNED);
  179 
  180         switch (ccb->ccb_h.func_code) {
  181         case XPT_PATH_INQ:
  182         {
  183                 struct ccb_pathinq *cpi = &ccb->cpi;
  184 
  185                 cpi->version_num = 1;
  186                 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
  187                 cpi->target_sprt = 0;
  188                 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
  189                 cpi->hba_eng_cnt = 0;
  190                 cpi->max_target = MFI_SCSI_MAX_TARGETS;
  191                 cpi->max_lun = MFI_SCSI_MAX_LUNS;
  192                 cpi->initiator_id = MFI_SCSI_INITIATOR_ID;
  193                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
  194                 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
  195                 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
  196                 cpi->unit_number = cam_sim_unit(sim);
  197                 cpi->bus_id = cam_sim_bus(sim);
  198                 cpi->base_transfer_speed = 150000;
  199                 cpi->transport = XPORT_SAS;
  200                 cpi->transport_version = 0;
  201                 cpi->protocol = PROTO_SCSI;
  202                 cpi->protocol_version = SCSI_REV_2;
  203                 cpi->ccb_h.status = CAM_REQ_CMP;
  204                 break;
  205         }
  206         case XPT_RESET_BUS:
  207                 ccb->ccb_h.status = CAM_REQ_CMP;
  208                 break;
  209         case XPT_RESET_DEV:
  210                 ccb->ccb_h.status = CAM_REQ_CMP;
  211                 break;
  212         case XPT_GET_TRAN_SETTINGS:
  213         {
  214                 struct ccb_trans_settings_sas *sas =
  215                     &ccb->cts.xport_specific.sas;
  216 
  217                 ccb->cts.protocol = PROTO_SCSI;
  218                 ccb->cts.protocol_version = SCSI_REV_2;
  219                 ccb->cts.transport = XPORT_SAS;
  220                 ccb->cts.transport_version = 0;
  221 
  222                 sas->valid &= ~CTS_SAS_VALID_SPEED;
  223                 sas->bitrate = 150000;
  224 
  225                 ccb->ccb_h.status = CAM_REQ_CMP;
  226                 break;
  227         }
  228         case XPT_SET_TRAN_SETTINGS:
  229                 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
  230                 break;
  231         case XPT_SCSI_IO:
  232         {
  233                 struct ccb_hdr          *ccbh = &ccb->ccb_h;
  234                 struct ccb_scsiio       *csio = &ccb->csio;
  235 
  236                 ccbh->status = CAM_REQ_INPROG;
  237                 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) {
  238                         ccbh->status = CAM_REQ_INVALID;
  239                         break;
  240                 }
  241                 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
  242                         if (ccbh->flags & CAM_DATA_PHYS) {
  243                                 ccbh->status = CAM_REQ_INVALID;
  244                                 break;
  245                         }
  246                         if (ccbh->flags & CAM_SCATTER_VALID) {
  247                                 ccbh->status = CAM_REQ_INVALID;
  248                                 break;
  249                         }
  250                 }
  251 
  252                 ccbh->ccb_mfip_ptr = sc;
  253                 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe);
  254                 mfi_startio(mfisc);
  255                 return;
  256         }
  257         default:
  258                 ccb->ccb_h.status = CAM_REQ_INVALID;
  259                 break;
  260         }
  261 
  262         xpt_done(ccb);
  263         return;
  264 }
  265 
  266 static struct mfi_command *
  267 mfip_start(void *data)
  268 {
  269         union ccb *ccb = data;
  270         struct ccb_hdr *ccbh = &ccb->ccb_h;
  271         struct ccb_scsiio *csio = &ccb->csio;
  272         struct mfip_softc *sc;
  273         struct mfi_pass_frame *pt;
  274         struct mfi_command *cm;
  275 
  276         sc = ccbh->ccb_mfip_ptr;
  277 
  278         if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL)
  279                 return (NULL);
  280 
  281         pt = &cm->cm_frame->pass;
  282         pt->header.cmd = MFI_CMD_PD_SCSI_IO;
  283         pt->header.cmd_status = 0;
  284         pt->header.scsi_status = 0;
  285         pt->header.target_id = ccbh->target_id;
  286         pt->header.lun_id = ccbh->target_lun;
  287         pt->header.flags = 0;
  288         pt->header.timeout = 0;
  289         pt->header.data_len = csio->dxfer_len;
  290         pt->header.sense_len = MFI_SENSE_LEN;
  291         pt->header.cdb_len = csio->cdb_len;
  292         pt->sense_addr_lo = cm->cm_sense_busaddr;
  293         pt->sense_addr_hi = 0;
  294         if (ccbh->flags & CAM_CDB_POINTER)
  295                 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len);
  296         else
  297                 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len);
  298         cm->cm_complete = mfip_done;
  299         cm->cm_private = ccb;
  300         cm->cm_sg = &pt->sgl;
  301         cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE;
  302         cm->cm_data = csio->data_ptr;
  303         cm->cm_len = csio->dxfer_len;
  304         switch (ccbh->flags & CAM_DIR_MASK) {
  305         case CAM_DIR_IN:
  306                 cm->cm_flags = MFI_CMD_DATAIN;
  307                 break;
  308         case CAM_DIR_OUT:
  309                 cm->cm_flags = MFI_CMD_DATAOUT;
  310                 break;
  311         case CAM_DIR_NONE:
  312         default:
  313                 cm->cm_data = NULL;
  314                 cm->cm_len = 0;
  315                 cm->cm_flags = 0;
  316                 break;
  317         }
  318 
  319         TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe);
  320         return (cm);
  321 }
  322 
  323 static void
  324 mfip_done(struct mfi_command *cm)
  325 {
  326         union ccb *ccb = cm->cm_private;
  327         struct ccb_hdr *ccbh = &ccb->ccb_h;
  328         struct ccb_scsiio *csio = &ccb->csio;
  329         struct mfip_softc *sc;
  330         struct mfi_pass_frame *pt;
  331 
  332         sc = ccbh->ccb_mfip_ptr;
  333         pt = &cm->cm_frame->pass;
  334 
  335         switch (pt->header.cmd_status) {
  336         case MFI_STAT_OK:
  337         {
  338                 uint8_t command, device;
  339 
  340                 ccbh->status = CAM_REQ_CMP;
  341                 csio->scsi_status = pt->header.scsi_status;
  342                 if (ccbh->flags & CAM_CDB_POINTER)
  343                         command = ccb->csio.cdb_io.cdb_ptr[0];
  344                 else
  345                         command = ccb->csio.cdb_io.cdb_bytes[0];
  346                 if (command == INQUIRY) {
  347                         device = ccb->csio.data_ptr[0] & 0x1f;
  348                         if ((device == T_DIRECT) || (device == T_PROCESSOR))
  349                                 csio->data_ptr[0] =
  350                                      (device & 0xe0) | T_NODEVICE;
  351                 }
  352                 break;
  353         }
  354         case MFI_STAT_SCSI_DONE_WITH_ERROR:
  355         {
  356                 int sense_len;
  357 
  358                 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
  359                 csio->scsi_status = pt->header.scsi_status;
  360                 sense_len = min(pt->header.sense_len, sizeof(struct scsi_sense_data));
  361                 bzero(&csio->sense_data, sizeof(struct scsi_sense_data));
  362                 bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len);
  363                 break;
  364         }
  365         case MFI_STAT_DEVICE_NOT_FOUND:
  366                 ccbh->status = CAM_SEL_TIMEOUT;
  367                 break;
  368         case MFI_STAT_SCSI_IO_FAILED:
  369                 ccbh->status = CAM_REQ_CMP_ERR;
  370                 csio->scsi_status = pt->header.scsi_status;
  371                 break;
  372         default:
  373                 ccbh->status = CAM_REQ_CMP_ERR;
  374                 csio->scsi_status = pt->header.scsi_status;
  375                 break;
  376         }
  377 
  378         mfi_release_command(cm);
  379         xpt_done(ccb);
  380 }
  381 
  382 static void
  383 mfip_cam_poll(struct cam_sim *sim)
  384 {
  385         return;
  386 }
  387
Cache object: ffd415f85f1ac1bf40dccc5621f38cfa
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/dev/mfi/mfi_cam.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/mfi/mfi_cam.c
